I wouldn't be surprised if it was something like, on the dev server SLOT_GAME_WIN_FRACTION=0.95 and then $win_fraction = (float) getenv('SLOT_GAME_WI

I wouldn't be surprised if it was something like, on the dev server SLOT_GAME_WIN_FRACTION=0.95 and then $win_fraction = (float) getenv('SLOT_GAME_WIN_FRACTION'); and then nobody bothered to set the environment variable on prod.